EP 0833809 B1 19991229 - NITRIC ACID HYDROLYSIS OF POLYAMIDES
Title (en)
NITRIC ACID HYDROLYSIS OF POLYAMIDES
Title (de)
SALPETERSÄURE-HYDROLYSE VON POLYAMIDEN
Title (fr)
HYDROLYSE DE POLYAMIDES PAR L'ACIDE NITRIQUE
Publication
Application
Priority
- US 9610328 W 19960613
- US 49383695 A 19950622
Abstract (en)
[origin: US5750791A] Dicarboxylic acid and diamine are recovered from polyamides by hydrolysis with nitric acid, followed by separation of the dicarboxylic acid, and hydrogenation of the nitric acid, and then recovery of the diamine.
IPC 1-7
C07C 51/06; C07C 55/14; C07C 55/02; C07C 55/18; C07C 63/24; C07C 63/26
IPC 8 full level
C07B 61/00 (2006.01); C07C 51/06 (2006.01); C07C 53/126 (2006.01); C07C 55/14 (2006.01); C07C 209/62 (2006.01); C07C 211/12 (2006.01); C07D 201/12 (2006.01)
CPC (source: EP US)
C07C 51/06 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
US 5750791 A 19980512; CA 2225381 A1 19970109; CA 2225381 C 20000905; DE 69605918 D1 20000203; DE 69605918 T2 20000615; EP 0833809 A1 19980408; EP 0833809 B1 19991229; JP 3048644 B2 20000605; JP H10510295 A 19981006; WO 9700846 A1 19970109
DOCDB simple family (application)
US 69711696 A 19960820; CA 2225381 A 19960613; DE 69605918 T 19960613; EP 96922469 A 19960613; JP 50387797 A 19960613; US 9610328 W 19960613